5 March 2003 [fixed in v3.0] - the GMOS South ITC output incorrectly reports that it is using the GMOS North CCD properties. It is actually using the correct file.

4 March 2003 - updates for semester 03B Call for Proposals. Added GMOS-S (currently assumes same optical properties as uses same files as GMOS-N but with blue-optimised detectors). NIRI (v3.1) spectroscopy internal background degraded to take account of grism scattering, predominantly at L but also some performance degradation at K and M).

14 Mar 2001 - rarely, if the wavelength of the emission line SED is given to 3 decimal places the ITC returns "null"; the workaround is to specify with a precision of only 2 d.p. or change the wavelength slightly

19 Feb 2001 - when the noise from the source flux is larger than the background, the ITC issues the warning "not background limited", even when the background noise still exceeds dark and readout noise. Whilst strictly true, the ITC should note that the observation is source noise limited.

16 Nov 2000 [fixed 21 Feb 2001] - in NIRI ITC, 'forward' calculation of total S/N does not given the same results as the 'reverse' calculation of integration time. Forward calculation actually gives the correct result.